自动调整UITableView的高度

Question

I have multiple tableviews in my ViewController and each tableview has different number of rows, please see image below:

Is there any way to match the height of the tableview according to its number of rows?

Answer 1

In your view controller, put code similar to the following:

override func updateViewConstraints() {
    super.updateViewConstraints()
    tableViewHeightConstraint.constant = tableView.contentSize.height;
}

Where tableViewHeightConstraint is an @IBOutlet to NSLayoutConstraint . Obviously with multiple table views you will need to reference multiple height constraints, so you'd just have one line in updateViewConstraints for each table view you want.

The advantage of this technique is that it takes all of the table view's content into account. It handles grouping, automatic cell height, etc.

Answer 2

You have to determine how many cells you have, then override

func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
  return CGRectGetHeight(self.tableView.bounds) / self.tableView.numberOfRowsInSection(indexPath.section)  
}

Btw, I suppose making use of header cells would be a better idea than implementing multiple tableviews.